CN101288354B - Sub-cooling unit for cooling system and method - Google Patents
Sub-cooling unit for cooling system and method Download PDFInfo
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- CN101288354B CN101288354B CN2006800365292A CN200680036529A CN101288354B CN 101288354 B CN101288354 B CN 101288354B CN 2006800365292 A CN2006800365292 A CN 2006800365292A CN 200680036529 A CN200680036529 A CN 200680036529A CN 101288354 B CN101288354 B CN 101288354B
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- refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/13—Economisers
Abstract
A system for cooling a medium includes a line having coolant flowing therein, and a sub-cooling unit in fluid communication with the line. The sub-cooling unit receives a portion of the coolant diverted from the line to cool coolant flowing in the line. A method o cooling a medium is further disclosed.
Description
Invention field
The present invention relates to cooling system, more specifically to being used to supply data processing, networking and the support of telecommunication equipment use and the cooling system of cabinet.
Background technology
Communication and Information Technology Equipment are normally for designing inside rack-mount and the plant cabinet (often be included in term " support " among).Equipment supporter is used for such as server, CPU, data processing equipment, networking gear, telecommunication equipment and storage device and so on communicate by letter and Information Technology Equipment holds and is arranged among less wiring closet and canyon and the big data center.Equipment supporter possibly be open configuration or can be ensconced the rack enclosure the inside, though when mentioning support, in cabinet possibly be included in.Standard carriage generally includes preceding attachment rail, for instance, vertically installs various unit such as server and CPU and is stacked on this preceding attachment rail in this support the inside.Standard carriage can both be used multiple different parts (for example, server guide plate) and sparsely or thick and fast constitutes from the parts of different manufacturers in any given time.
The communication of most of dresses and Information Technology Equipment be consumes electric power and generation heat all, and this possibly have adverse influence to performance, reliability and the useful life of equipment part.The heating that the rack mounted device of specifically, ensconcing the cabinet the inside is subject in the cabinet border, to produce during operation especially and the infringement of focus.The heat that support unit produced depends on the amount of electrical power that equipment draws during operation in this support.So the heat that given support or cabinet can produce possibly change significantly from tens watts and changes to about 40,000 watts, and this upper limit continues to increase along with the sustainable development of this technology.
In some embodiments, rack mounted device is through front one side or air inlet one side suction air along support, through the components and parts suction air with use up from the back side one side of support subsequently or export side discharged air cooling.Provide the air that is enough to be used for cooling off airflow requirement since frame dress parts various numbers can change significantly with type and the support configuration different with cabinet.
Canyon and data center are equipped with air-conditioning usually or cooling system is support supply cool air and makes it circulation.Such cooling system uses the floor that raises to be beneficial to the air-conditioning and the circulatory system.Such system usually uses the floor tile that opens wide and floor grid or exhaust outlet so that send the cool air from the air duct of the underfloor of the rising that is arranged in canyon.Floor tile that opens wide and floor grid or exhaust outlet are usually located at the equipment supporter front and arrange side by side along corridor between number row support.
A kind of cooling system be that the assignee in the application has and this through quote as proof incorporate into IT EQUIPMENT COOLING serve as No. the 10/993rd, 329, the common U.S. Patent application of examining of topic application on November 19th, 2004 in disclose.In one embodiment, this system comprises one or more main condenser modules, coolant distribution section, heat exchanger module section and backup coolant section.Coolant distribution section comprises big capacity storage tank, vacuum/recovery pump, manifold and flexible pipe.Condensation module is given heat exchanger module section nice and cool liquid by distribution section, and liquid flashes to gas by the hot-air from information technoloy equipment there, and vapor coolant is got back to the main condenser module then.In the main condenser module, the vapor coolant of the main cooling segment heat of cooling makes it to become liquid again so that be supplied to heat exchanger module section by distribution section.Just in case one of main condenser module breaks down, if system power supply does not break down as yet, secondary condensation module can cool off and the vapor coolant of condensation heat.If system power supply breaks down; The backup coolant section that possibly comprise several ice storage tanks need not use the steam compression system of high power consumption just can continue the refrigerant of cooling from the heat of heat exchange module section, is exhausted up to battery life end or system's ice storage.
Summary of the invention
One aspect of the present invention is the system that is used for coolant about a kind of.In one embodiment, this system includes the pipeline of refrigerant flow therein and the cooling unit again that is communicated with this line fluid.Cooling unit receives a part of refrigerant that is shifted out from this pipeline transfer and cools off the refrigerant that this pipeline, flows again.
This system implementation scheme possibly comprise by be communicated with this line fluid cool off again expansion gear, with cool off cooling heat exchanger again and the cooling unit again that coolant pump again that part of refrigerant transfer that is communicated with cooling heat exchanger fluid again is pumped into this pipeline is formed that the expansion gear fluid is communicated with the heat of the refrigerant that absorbs to flow in the comfortable pipeline again.In one embodiment, cooling heat exchanger comprises and this pipeline and the coaxial condensing unit that is communicated with of cooling unit fluid more again.In one embodiment, that part of refrigerant of transferring to again cooling unit is less than 5% of the liquid coolant that flows through this pipeline.In specific embodiment, that part of refrigerant of transferring to again cooling unit be flow through this pipeline liquid coolant about 2%.This system possibly comprise being communicated with this line fluid and be fit to be cooled to refrigerant the condensing unit of substantial liquid state and be communicated with the main pump of suitable pumping liquid refrigerant by this pipeline with the condensing unit fluid from substantial evaporating state.This system possibly further comprise the controller of this cooling system operation of control.The control of this controller is from that part of refrigerant of the pipeline transfer that couples together condensing unit and main pump.
Another aspect of the present invention is the system that is used for coolant about a kind of, and this system includes the pipeline of refrigerant flow therein and through a part of refrigerant is shifted and with the refrigerant absorption of that part of transfer device from the heat of the refrigerant that flows through this pipeline from this pipeline.
In some embodiments, be used for the device that cool stream crosses the refrigerant of pipeline and comprise the cooling unit again that is communicated with this line fluid, this again cooling unit receive that part of refrigerant that shifts from this pipeline.This again cooling unit comprise the expansion gear of cooling again that is communicated with this line fluid, with cool off again the expansion gear fluid be communicated with the refrigerant that absorbs to flow in the comfortable pipeline heat cooling heat exchanger again and be communicated with the coolant pump again that is pumped into the refrigerant of that part of transfer this pipeline with cooling heat exchanger fluid again.This again cooling heat exchanger comprise and this pipeline and the coaxial condensing unit that is communicated with of cooling unit fluid again.This system further comprises being communicated with line fluid and is fit to be cooled to refrigerant liquid in fact condensing unit and be communicated with the main pump of suitable pumping liquid refrigerant via this pipeline with the condensing unit fluid from evaporating state in fact.This system possibly further comprise the controller of control cooling system operation, and wherein said controller control is from that part of refrigerant of the pipeline transfer that couples together condensing unit and main pump.In one embodiment, that part of refrigerant of transferring to again cooling unit is less than 5% of the liquid coolant that flows through this pipeline.In some embodiments, that part of refrigerant of transferring to again cooling unit be flow through this pipeline liquid coolant about 2%.
Further aspect of the present invention is the method about refrigerant in the cooling pipeline.This method comprises that the refrigerant that makes a part flow through pipeline transfers to cooling unit again and absorb the heat from the refrigerant that flows through this pipeline with that part of refrigerant of transferring to again cooling unit.
The embodiment of this method possibly further comprise that part of refrigerant pumped back pipeline.In one embodiment, that part of refrigerant of transferring to again cooling unit is less than 5% of the refrigerant that flows through this pipeline.In some embodiments, that part of refrigerant of transferring to again cooling unit be flow through pipeline refrigerant about 2%.
Another aspect of the present invention points to and comprises the cooling system that is fit to be cooled to refrigerant from substantial evaporating state liquid in fact condensing unit.This system further comprises main pump that is communicated with suitable pumping refrigerant with the condensing unit fluid and the cooling unit again that is communicated with the condensing unit fluid.This again cooling unit receive a part of refrigerant and transfer to main pump so that cooling flows to the refrigerant of main pump from condensing unit from condensing unit.
Embodiment of the present invention possibly comprise by be communicated with the condensing unit fluid form one cool off again expansion gear, with cool off again the expansion gear fluid be communicated be fit to absorb come since condensing unit flow to main pump refrigerant heat cooling heat exchanger again and with cooling heat exchanger and condensing unit fluid are communicated with a cooling unit again that is fit to the coolant pump again of the refrigerant pumped back condensing unit of transfer again.Cooling heat exchanger comprises and condensing unit and the coaxial condensing unit that is communicated with of cooling unit fluid more again.This system possibly further comprise the controller of control cooling system operation, that part of refrigerant that this controller control is shifted to main pump from condensing unit.In one embodiment, that part of transfer go again the refrigerant of cooling unit be less than from condensing unit flow to main pump liquid coolant 5%.In specific embodiment, that part of transfer go again the refrigerant of cooling unit be from condensing unit flow to main pump liquid coolant about 2%.
After studying following accompanying drawing, practical implementation method and claims, will more fully understand the present invention.
Description of drawings
In order to understand the present invention preferably, with reference at this through quoting the accompanying drawing that is merged in as proof, wherein:
Fig. 1 is used for cooling off having according to embodiment of the present invention of cabinet or support to be used for cooling off the sketch map of system of cooling unit again that flows to the refrigerant of pump from condensing unit; And
Fig. 2 is the flow chart of method that is used for cooling off again the refrigerant of certain cooling system according to embodiment of the present invention.
Embodiment
Just to illustrating, but do not limit universality, now will invention will be described in detail with reference to the attached drawing.This invention be not limited in the following description statement in its application facet with the structure of illustrational parts and the details of arrangement in the accompanying drawings.The present invention can have other embodiment and put into practice or implement with various mode.In addition, wording and the term in this use is in order to describe, should not to be regarded as restriction." comprise ", " by～form ", " having ", " comprising ", " relating to " and changing mean in this use and to include project and coordinate and the addition item of listing thereafter.
With reference to accompanying drawing, specifically with reference to Fig. 1, have usually with 10 coolings that are used for pointed out and hold, for instance, the system in the space of electronic equipment (comprising rack, canyon and data center).Such space is fit to accommodate for accommodating cabinet or the support that networking, telecommunication and other electronic equipment design.In one embodiment; Cooling system 10 possibly be used in that the front was once mentioned and through quote as proof incorporate into " IT EQUIPMENT COOLING " serve as the cooling system of the sort of type that disclosed for the 10/993rd, No. 329 of the U.S. Patent application of topic application on November 19th, 2004 among.According to following more detailed discussion, according to the cooling system 10 of embodiment of the present invention be for through make a part of refrigerant from condensing unit transfer to pump with further again the cooling refrigerant that is delivered to this pump efficient and the reliability of improving whole cooling system design.
As shown in Figure 1, medium or refrigerant (for example, but be not limited to R134A and R410A refrigerant) provide and provide in the closed system the inside of the main pump 12 that is included as the design of pumping liquid refrigerant.Liquid coolant is placed on closed system the inside and is under the supercharging condition that main pump 12 provides.In one embodiment, main pump 12 possibly be equipped with, and for instance, can increase the total pressure of refrigerant the centrifugal pump of two series connection of 20-25psig.In this embodiment, these two pumps possibly belong to the sort of type of WRD40.5A-23 type centrifugal pump that Dayton city, Ohio Tark company sells.Yet, can realize that the single pump of 20-25psig total pressure increment possibly be provided and still drop within the scope of the present invention.
In case through expansion valve 14, refrigerant flows through the evaporator unit 18 that at least one is communicated with expansion valve 14 fluids via pipeline 20 with low pressure liquid/vapor mix (80% liquid and 20% steam).In one embodiment, evaporator unit 18 possibly adopt the coil form of fan, and this coil form be fit to absorb the heat from the space, for example from the heat of the hot-air of above-mentioned wiring cabinet, canyon or data center.Evaporator unit 18 possibly be an evaporator of little-channel that 25.4 millimeters of two rows' microchannel spiral tube component is arranged like this, and it is by state of Mississippi Grenada city Heatcraft manufactured and sale.In other embodiment, this evaporator unit possibly be fit to absorb the heat from another kind of medium (for example, being delivered to the refrigerant of the heat of this evaporator unit), and this thermal medium comprises the heat that obtains from the space of needs cooling in this case.
As shown in Figure 1, be added on the evaporator unit 18 from the heat load 22 in the space of needs coolings.Make it the refrigerant evaporation that the heat of heat load 22 of form that the slave unit cabinet points to the warm air of evaporator unit 18 descends the slight pressure that flows through this evaporator unit from being with fan.The temperature of the vapor coolant that therefore, flows in evaporator unit 18 the insides is higher than the temperature that gets into the low pressure liquid/vapor mix of evaporator unit inlet via pipeline 20.Though this temperature, is left the pressure that the synthesis pressure of the vapor coolant of evaporator unit 18 equals low pressure liquid/vapor mix in fact than higher.
Be in vapor coolant under the hot conditions and under low relatively pressure, flow to the condensing unit 24 WTT W9-130 type condensing unit of the WTT America manufactured in New York bohemia city (for example, by).As shown in the figure, condensing unit 24 is communicated with evaporator unit 18 and main pump 12 fluids via pipeline 26,28 respectively.It should be noted that, pipeline 26, experience the small pressure loss to the high-temperature steam refrigerant of condensing unit 24 from evaporator unit 18 discharge currents.Condensing unit 24 is to get into the high-temperature steam refrigerant of this condensing unit and make the refrigerant that is in a liquid state after the cooling get back to main pump 12 designs via pipeline 28 for cooling.According to the discussion of front, the design of given main pump 12, the requirement of cooling system 10 are that the refrigerant that gets into main pump is in a liquid state.
In one embodiment; The refrigerant that need cool off in condensing unit 24 the insides possibly pass through the heat exchanger 30 that is the quenching unit form; This heat exchanger via pipeline 32,34 directly be communicated with the condensing unit fluid be fit to provide icy water (for example, about 45
water).Such arrangement causes the icy water via pipeline 34 entering condensing units 24 to be cooled to liquid condition to the refrigerant of evaporation.The water of heat (for example, about 52
water) flow back to refrigeration plant so that further cooling via pipeline 32.Then, liquid coolant flows to main pump 12 from condensing unit 24, begins pumping, expansion, the heating and cooling cycle of refrigerant therefrom once more.
Controller 36 (for example, the aforementioned controller that the 10/993rd, No. 329 patent application disclosed) is configured to control the operation of cooling system shown in Figure 1 10.Entry condition at main pump on the pipeline 28 is vital in two phase pumping coolant systems, because liquor pump (for example, main pump 12) requires 100% liquid.In order to move and avoid main pump 12 to be out of order efficiently, the liquid coolant of cooling is satisfactory again.In particular; Because condensing unit 24 is drawn towards main pump 12 by heat exchanger 30 cooling steam refrigerants and " acceptable " liquid coolant (filled part and be cooled to liquid refrigerant),, suitably do not operate acceptable refrigerant so possibly being cooled to be fit to main pump maturely.State another kind of method, it is satisfactory that the refrigerant of all entering main pumps 12 is liquid condition.Otherwise cavitation and/or vapour locking possibly cause main pump 12 incapacitations.The failure of main pump 12 possibly cause the bust of cooling system 10, and therefore harm needs the continuation operation of the electronic equipment of cooling.
Often, because environmental condition for instance, is difficult to be cooled to refrigerant to be enough to guarantee that refrigerant is delivered to the temperature that main pump is in a liquid state before at it in the outlet of condensing unit 24.Because the outlet temperature of condensing unit 24 is near the temperature of the refrigerant that need further cool off with heat exchanger in pipeline 28 scopes, needs further to cool off this refrigerant more sometimes and could guarantee that the refrigerant 100% that is delivered to main pump 12 is in a liquid state.Cooling system (for example, water cooler) combines with another super-huge condensing unit to realize providing this lower method of temperature independently.Yet such method needs expensive installation with operating cost and in the great majority application, be unpractiaca.
Still with reference to Fig. 1, illustrate usually the cooling system of pointing out with 40 10 according to the cooling unit again of embodiment of the present invention.As shown in the figure, cooling unit 40 is usually arranged between condensing unit 24 and the main pump 12 again, so that it is communicated with these part fluids of cooling system 10 with the mode that describes below.In particular, as stated, the refrigerant that cools off with condensing unit 24 is drawn towards main pump 12 via pipeline 28.Adopt embodiment of the present invention, the sub-fraction refrigerant is transferred to cooling unit 40 with pipeline 42 again and is further cooled off.In some embodiments, the quality that shifts the refrigerant remove pipeline 42 be less than from condensing unit 24 be delivered to main pump 12 refrigerant gross mass 5%.In preferred embodiments, from main pump 12 transfer to the refrigerant that the quality of the refrigerant of pipeline 42 sent gross mass about 2%.
Possibly to be configured to what arrive main pump 12 and the refrigerant within cooling unit 40 again with valve controller in electrical communication 36 serve as the quantity of the basis refrigerant confirming to shift based on environmental condition to put 44.Remaining refrigerant (that is the refrigerant that, does not shift) continues to flow to main pump 12 via pipeline 28.As described in below will be in more detail, the refrigerant that is delivered to main pump 12 is cooled to be enough to the cool temperature (depending on employed refrigerant type and the environmental condition that this cooling system 10 is exerted an influence) that guarantees that refrigerant is in a liquid state.
Before shifting, refrigerant is flowed through from condensing unit 24 and is arranged in the heat exchanger 46 between condensing unit 24 and the main pump 12.In one embodiment, heat exchanger 46 includes the coaxial condensing unit of concentric tube.Such arrangement causes to be left the refrigerant of condensing unit 24 via pipeline 28 and flows in the interior pipe of coaxial condensing unit 46 (showing) the inside and transfer to outer tube (the showing) the inside that pipe is ensconced wherein in the handle of refrigerant at this coaxial condensing unit of pipeline 42 and flow.Coaxial condensing unit is widely known by the people technically, and possibly be the AES003522 type that the Packless industrial group by Texas Waco city provides.As the following that kind that discusses in more detail, in these coaxial condensing unit 46 the insides, the refrigerant that flows to main pump 12 via pipeline 28 from condensing unit 24 is transferred to the refrigerant cooling of cooling unit 40 again.
As shown in Figure 1, cooling unit 40 comprises that being connected reduction with pipeline 42 transfers to this expansion valve of cooling again 48 of the pressure and temperature of the refrigerant of cooling unit more again.In some embodiments, cooling off expansion valve 48 again possibly replaced by capillary or restricting orifice.In one embodiment, the supercooling expansion valve possibly belong to the sort of type of SJ series expansion valve that the Sporlan branch of the Parker-Hannifin company in Washington, Missouri State city sells.
As stated, heat exchanger 46 (that is, coaxial condensing unit) receives via pipeline 52 from the refrigerant that cools off expansion valve 48 again, so flow through the heat of the refrigerant absorption of outer tube from the refrigerant of pipe in flowing through.The refrigerant of guiding main pump 12 into via pipeline 28 is in other words cooled off by cooling unit 40 more again.Coolant pump 54 is communicated with cooling heat exchanger 46 and condensing unit 24 fluids again via pipeline 56,58 respectively again, the refrigerant pumped back condensing unit that shifts.
Come to the point, " acceptable " liquid coolant flows to main pump 12 via pipeline 28 from condensing unit 24.Valve 44 is transferred to the refrigerant of sub-fraction quality again each part of cooling unit 40 under the manipulation of controller 36.Valve 44 possible configurations become selecting the refrigerant of quantity to guide this cooling unit again into by controller.For instance, by pipeline 28 flow to main pump refrigerant gross mass 2% possibly shift again cooling unit 40.The refrigerant that shifts expands by cooling off expansion valve 48 again, reduces the pressure and temperature of refrigerant greatly.Again cooling exchanger 46 be designed to the refrigerant that shifts come to flow in the comfortable pipeline 28 main pump 12 the heat of refrigerant remove, guarantee that whereby the refrigerant that flows to main pump is liquid condition.
In case by heat exchanger 46 heating, the refrigerant of evaporation is just by liquid/vapor coolant pump 54 superchargings again that are communicated with cooling heat exchanger and condensing unit 24 fluids again via pipeline 56,58 respectively.Therefore at this moment, the pressure of the refrigerant of evaporation is very low, need prepare coolant pump 54 again and refrigerant is pressurized to is enough to get into once more the pressure of refrigerant band from the pipeline 26 of evaporator unit 18.In particular, the liquid/vapor refrigerant be provide under the pressure in pipeline 58 and flow to pipeline 26, its is sent back to the refrigerant that flows through the evaporation that comes from evaporator unit 18 there.In one embodiment, liquid/vapor pump 54 is linear piston pumps of the Pumpworks manufactured in Ming Niyabo Nice, Minnesota State city.The pressure of the liquid/vapor refrigerant of pipeline 58 the insides is similar to the pressure of the vapor coolant of pipeline 26 the insides in fact, and in a single day refrigerant is got back to pipeline 26 and just flowed to condensing unit 24.
Therefore, people should observe cooling unit again 40 of the present invention and can be used for any condensing unit of in the cooling system that discloses in No. the 10/993rd, 329, the U.S. Patent application that with " IT EQUIPMENT COOLING " is topic, showing and describe.Cooling unit 40 is effective especially guaranteeing to send refrigerant to pump aspect being in a liquid state again.Again cooling unit 40 rely on the closed systems the inside refrigerant again cryogen delivery give the refrigerant of main pump.
Turn to Fig. 2 now, normally point out with 70 in the method for cooling off refrigerant again of cooling system (for example, cooling system 10) the inside.In step 72, refrigerant is pumped into expansion gear (for example, expansion valve 14) by pump (for example, main pump 12).In step 74, this expansion gear expands refrigerant, refrigerant is reached accept the kilter of heat load.In step 76, heat load is added on the refrigerant, this heat load for example, is held the space of electronic equipment from the space of needs cooling.The heat load that adds to refrigerant is enough to make the refrigerant evaporation usually.Next, in step 78, refrigerant condenses to liquid condition and is sent back to pump, and circulation begins once more there.
Still with reference to Fig. 2, in step 80, a part of refrigerant is transferred to cooling unit (for example, cooling unit 40 again) again, and the latter is designed to the refrigerant of cool stream to pump again.The environmental condition that the inventive method can shift with the refrigerant that leaves condensing unit is the refrigerant that quantity is selected on the basis, for example, flow to main pump refrigerant 2%).In step 82, the refrigerant of that part of transfer flows to heat exchanger (for example, heat exchanger 46) and absorbs the heat from the refrigerant that flows to pump.The heat that absorbs with heat exchanger causes the refrigerant of further cool stream to pump.After the heat that has absorbed refrigerant, the refrigerant of that part of transfer is pumped back the condensing unit of liquid/vapor coolant in step 84.
The cooling unit again 40 that people should observe embodiment of the present invention can be used to be different from the cooling system of cooling system shown in Figure 1 10.Cooling unit 40 can be used for any system again, no matter be cooling system or heating system, as long as the pump of promising pumping liquid refrigerant design.Provide again cooling unit 40 that such system can be operated effectively and more reliably.
So far described at least one embodiment of the present invention, various replacement scheme, amendment scheme and improvement project will be easy to take place for the people who is familiar with this technology.Such replacement scheme, amendment scheme and improvement project are tended in scope of the present invention and spirit.Therefore, the description of front only is as an example and is not inclined to as restriction.Restriction of the present invention limits in claims and equivalents thereof.
Claims (24)
1. one kind is used for the system of coolant, and this system comprises:
Pipeline, this pipeline has the refrigerant of flow therein;
Main pump, it is communicated with the condensing unit fluid, is fit to the pumping liquid refrigerant;
Expansion valve, it directly is communicated with the main pump fluid through pipeline, controls mobile from the refrigerant of main pump;
Evaporator, it directly is communicated with the expansion valve fluid through pipeline, is fit to the evaporative freezing agent;
Condensing unit, this condensing unit directly is communicated with the evaporator fluid through pipeline, is fit to refrigerant is cooled to liquid condition from evaporating state; And
The cooling unit again that line fluid direct and between condensing unit and main pump is communicated with; This again cooling unit receive a part of refrigerant that shifts out from pipeline and cool off the refrigerant that this pipeline, flows; Wherein again cooling unit comprise the expansion gear of cooling again that is communicated with line fluid and with cool off the expansion gear fluid again and be communicated with cooling heat exchanger again with the heat that absorbs the refrigerant that flows in the comfortable pipeline.
2. according to the system of claim 1, wherein cooling unit further comprises coolant pump more again, this again coolant pump with cool off the heat exchanger fluid again and be communicated with the cold-producing medium that shifts with pumping and partly arrive pipeline.
3. according to the system of claim 1, wherein cooling heat exchanger comprises and pipeline and the coaxial condensing unit that is communicated with of cooling unit fluid more again.
4. according to the system of claim 1, wherein transfer to again that part of refrigerant in the cooling unit and be less than 5% of the liquid coolant that flows through pipeline.
5. according to the system of claim 1, that part of refrigerant of wherein transferring to again cooling unit be flow through pipeline liquid coolant 2%.
6. according to the system of claim 1, further comprise the controller of the operation of controlling cooling system.
7. according to the system of claim 6, that part of refrigerant that its middle controller control is shifted out from the pipeline that couples together condensing unit and main pump.
8. one kind is used for the system of coolant, and this system comprises:
Pipeline, this pipeline has the refrigerant of flow therein;
Main pump, it is communicated with the condensing unit fluid, is fit to the pumping liquid refrigerant;
Expansion valve, it directly is communicated with the main pump fluid through pipeline, controls mobile from the refrigerant of main pump;
Evaporator, it directly is communicated with the expansion valve fluid through pipeline, is fit to the evaporative freezing agent;
Condensing unit, this condensing unit directly is communicated with the evaporator fluid through pipeline, is fit to refrigerant is cooled to liquid condition from evaporating state; And
Device; This device comes cool stream to cross the refrigerant of this pipeline through the heat that from the pipeline between condensing unit and main pump, shifts a part of refrigerant and use that part of refrigerant that shifts out to absorb the refrigerant of the pipeline of flowing through; Wherein being used for the device that cool stream crosses the refrigerant of pipeline comprises the cooling unit again that directly is communicated with line fluid; This again cooling unit receive that part of refrigerant that shifts from pipeline; Wherein again cooling unit comprise the expansion gear of cooling again that is communicated with line fluid and with the cooling heat exchanger again of the heat that cools off the refrigerant that absorption that the expansion gear fluid is communicated with to flow in the comfortable pipeline again.
9. according to Claim 8 system, wherein cooling unit comprises that further the coolant pump again that is communicated with the fluid of said cooling heat exchanger again is so that be pumped into pipeline to a that part of refrigerant that shifts again.
10. according to Claim 8 system, wherein said cooling heat exchanger again comprises and pipeline and the coaxial condensing unit that is communicated with of cooling unit fluid again.
11., further comprise the controller of control cooling system operation according to the system of claim 9.
12. according to the system of claim 11, that part of refrigerant that the control of its middle controller is shifted out from the pipeline transfer that couples together condensing unit and main pump.
13. system according to Claim 8, that part of refrigerant that wherein shifts to cooling unit again is less than 5% of the liquid coolant that flows through pipeline.
14. system according to Claim 8, that part of refrigerant that wherein shifts to cooling unit again be flow through pipeline liquid coolant 2%.
15. a cooling system comprises:
Be fit to refrigerant is cooled to from evaporating state the condensing unit of liquid condition;
The main pump of the suitable pumping liquid refrigerant that is communicated with the condensing unit fluid through pipeline; And
The cooling unit again that is communicated with the condensing unit fluid through pipeline; This again cooling unit receive a part of refrigerant of shifting to main pump from condensing unit so that the refrigerant that cooling is flowed to main pump from condensing unit; Wherein again cooling unit comprise the expansion gear of cooling again that is communicated with line fluid and with the cooling heat exchanger again of the heat that cools off the refrigerant that suitable absorption that the expansion gear fluid is communicated with to flow to main pump since condensing unit again.
16. according to the cooling system of claim 15, wherein said cooling unit more further comprises and cools off the suitable coolant pump again with the refrigerant pumped back condensing unit that shifts that heat exchanger and condensing unit fluid are communicated with again.
17. according to the cooling system of claim 15, wherein cooling heat exchanger comprises and condensing unit and the coaxial condensing unit that is communicated with of cooling unit fluid more again.
18., further comprise the operation of controller with the control cooling system according to the cooling system of claim 15.
19. according to the cooling system of claim 18, that part of refrigerant that its middle controller control is shifted to main pump from condensing unit.
20. according to the cooling system of claim 15, wherein that part of refrigerant to cooling unit transfer again is less than from condensing unit to 5% of main pump flowing liquid refrigerant.
21. according to the cooling system of claim 15, wherein that part of refrigerant to cooling unit transfer again is to 2% of main pump flowing liquid refrigerant from condensing unit.
22. a cooling system comprises:
Main pump is communicated with condensing unit by pipeline, is fit to the pumping liquid refrigerant;
Through the expansion valve that pipeline directly is communicated with the main pump fluid, it is used to reduce the pressure of refrigerant;
Through the evaporator that pipeline directly is communicated with the expansion valve fluid, it is used to heat refrigerant;
Through the condensing unit that pipeline directly is communicated with the evaporator fluid, it is used for refrigerant is cooled to liquid condition from evaporating state; And
The cooling unit again that directly is communicated with through pipeline with the condensing unit fluid; This again cooling unit receive a part of refrigerant from pipeline so that the refrigerant that cooling is flowed in this pipeline; Wherein again cooling unit comprise the expansion gear of cooling again that is communicated with line fluid and with cool off the suitable absorption pipeline that the expansion gear fluid is communicated with again in the cooling heat exchanger again of heat of the refrigerant that flows.
23. according to the cooling system of claim 22, wherein cooling unit further comprises and cools off the coolant pump again that is fit to the refrigerant that a part shifts is pumped into pipeline that the heat exchanger fluid is communicated with again again.
24. according to the cooling system of claim 22, wherein cooling heat exchanger comprises and pipeline and the coaxial condensing unit that is communicated with of cooling unit fluid more again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210310350.9A CN103002711B (en) | 2005-10-05 | 2006-09-26 | Sub-cooling unit for cooling system and method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/243,628 US7406839B2 (en) | 2005-10-05 | 2005-10-05 | Sub-cooling unit for cooling system and method |
| US11/243,628 | 2005-10-05 | ||
| PCT/US2006/037772 WO2007044235A2 (en) | 2005-10-05 | 2006-09-26 | Sub-cooling unit for cooling system and method |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210310350.9A Division CN103002711B (en) | 2005-10-05 | 2006-09-26 | Sub-cooling unit for cooling system and method |
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| CN101288354A CN101288354A (en) | 2008-10-15 |
| CN101288354B true CN101288354B (en) | 2012-10-10 |
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| CN2006800365292A Active CN101288354B (en) | 2005-10-05 | 2006-09-26 | Sub-cooling unit for cooling system and method |
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| EP (1) | EP1943889B1 (en) |
| JP (1) | JP4902656B2 (en) |
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| US8347641B2 (en) | 2013-01-08 |
| EP1943889A2 (en) | 2008-07-16 |
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| JP4902656B2 (en) | 2012-03-21 |
| AU2006302679A1 (en) | 2007-04-19 |
| WO2007044235A3 (en) | 2007-09-13 |
| ES2477869T3 (en) | 2014-07-18 |
| US7406839B2 (en) | 2008-08-05 |
| CA2624308A1 (en) | 2007-04-19 |
| CN103002711B (en) | 2015-07-22 |
| EP1943889B1 (en) | 2014-04-23 |
| KR101391344B1 (en) | 2014-05-26 |
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